#include <STC15F2K60S2.H>


void  system_int()
{
	P0 = 0XFF;
	P2 = P2&0X1F|0X80;
	P2 &= 0X1F;
	
	P0 = 0X0;
	P2 = P2&0X1F|0XA0;
	P2 &= 0X1F;





}

